Should I take anker fast charger or the iPad air charger to fast charge my iPhone? Or the fast charger from samsung would be a good idea?

Should I take anker fast charger or the iPad air charger to fast charge my iPhone? Or the fast charger from samsung would be a good idea?

Added (1). I own an iPhone XS and the standard charger seems so slow
I used Samsung Note 8 before and this charger far below what I expect
Surfs up on internet that the recommendations are buy the fast charger from anker brand or the ipad air charger
buying the apple fast charger is out of question with high price
I do own a samsung fast charger but still some people out there said that samsung charger is not good for the battery health.
Any of you guys buy the fast charger for your iPhone?

Is it possible to take a online course on just your iPhone?

I'm taking biology 1 this summer for like 8 weeks or something like that. Since my school ends at May 28, I leave at June 3rd and my online classes start at June 5th. I'm not sure if my parents would let me bring my PC on the plane, is it fine to do it on phone? I never did a online class before, and I searched on YouTube "What online course looks like" and there seems to be a lot of file saving for assignments

What are people doing thats so fun on their computers / smart phone?

I'm so out of the loop! Haven't had internet this past year and honestly have never had too much access to technology compared to other people my age (22).
So… What exactly are people doing on their phones? And laptops?
Games? What games?
Cool community apps? What apps?
Sciencey stuff? News? What?
Is this the product of me never having an iPhone or something. I'm so lost. Watched the movie Eighth Grade that came out this last year and I was like wait what the heck are these kids doing on their phone?
Or are they all literally just doing Facebook/Instagram/Twitter/Reddit?